Some things (like this Porsche frame) shouldn't be considered restorations. How can you call something a restoration when it looks like they will have to source 99% of the car from somewhere else. It becomes a Frankenstein car at that point.
A vin number and a rusty frame (that they will add artificially to) does not make the car authentic to me. You could flip it around, and add the original headlights from this car to a complete replica, and claim the same thing.
I guess you can do/claim anything you want if you have enough money to burn.